On a tiny beach at Erie Basin Marina in Buffalo, N.Y., Nate Drag scans the sand and driftwood. He's part of the Alliance for the Great Lakes, and he helps organize beach clean ups.
"The closer you look, you can start seeing the plastic popping out," he says.
Last year, Drag says, hundreds of volunteers picked up thousands of pounds of trash. And lots of plastic bags.
"There you go," he said. "There's a garbage bag, and then there’s a shopping bag."